OMRON C120-LK202-EV1
OMRON C120-LK202-EV1
CPU Capabilities
The C200H-CPU21-E/CPU23-E/CPU31-E CPUs are based on the C200H
CPU11-E CPU, except only the CPU31-E supports Network Instructions. All of
the CPUs covered in this manual also support a group of High-density I/O Units
called Group-2 High-density I/O Units. Group-2 High-density I/O Units are clas
sified by themselves and are not classified as Special I/O Units.
The following table lists the capabilities of the various C200H CPUs.
Function CPU01-E CPU03-E CPU11-E CPU21-E CPU23-E CPU31-E
Compatible with Group-2 High-density I/O Units
(C200H-ID216/ID217/OD218/OD219)
No No No Yes Yes Yes
Can process GROUP-2 HIGH-DENSITY I/O
REFRESH – MPRF(61)
No No No Yes Yes Yes
Compatible with C200H-MR433/MR833/ME432
Memory Units
Yes1 Yes1 Yes1 Yes Yes Yes1
Compatible with C200H-ME832 Memory Unit No No No Yes Yes Yes1
Error history No No Yes Yes Yes Yes
Clock/calendar No No Yes Yes2 Yes2 Yes
Forced Status Hold Bit (SR 25211) No No Yes Yes Yes Yes
Can set TERMINAL mode for Programming
Console
No No Yes Yes Yes Yes
Additional instructions:
REVERSIBLE WORD SHIFT – RWS(17)
CYCLE TIME – SCAN(18)
MULTI-WORD COMPARE – MCMP(19)
LONG MESSAGE – LMSG(47)
TERMINAL MODE – TERM(48)
SET SYSTEM – SET(49)
DOUBLE COMPARE – CMPL(60)
COLUMN-TO-WORD – CTW(63)
WORD-TO-COLUMN – WTC(64)
HOURS-TO-SECONDS – HTS(65)
SECONDS-TO-HOURS – STH(66)
VALUE CALCULATE – VCAL(69)
No No Yes Yes Yes Yes
Network Instructions:
NETWORK SEND – SEND(90)
NETWORK RECEIVE – RECV(98)
No No Yes No No Yes
Power Supply AC DC AC AC DC AC
Note 1.The C200H-CPU01-E/CPU03-E cannot use the Memory Units’ clock, and
the C200H-CPU11-E/CPU31-E CPUs have a built-in clock.
2.The C200H-CPU21-E/CPU23-E can use the C200H-MR433/MR833/
ME432/ME832 Memory Units’ clock.
Introduction
Details, including the name, acronym, range, and function of each area are sum
marized in the following table. All but the last three of these areas are data areas.
Data and memory areas are normally referred to by their acronyms.
Area Acronym Range Function
Internal Relay IR Words: 000 to 235
Bits: 0000 to 23515
Used to control I/O points, other bits, timers,
and counters, and to temporarily store data.
Special Relay SR Words: 236 to 255
Bits: 23600 to 25507
Contains system clocks, flags, control bits, and
status information.
Auxiliary Relay AR Words: AR 00 to AR 27
Bits: AR 00 to AR 2715
Contains flags and bits for special functions.
Retains status during power failure.
Data Memory DM Read/write: DM 0000 to DM 0999
Read only: DM 1000 to DM 1999
Used for internal data storage and manipula
tion.
Holding Relay HR Words: HR 00 to HR 99
Bits: HR 0000 to HR 9915
Used to store data and to retain the data values
when the power to the PC is turned off.
Timer/Counter TC TC 000 to TC 511 (TC numbers used
to access other information)
Used to define timers and counters, and to ac
cess completion flags, PV, and SV. In general,
when used as a bit operand, a TC number ac
cesses the completion flag for the timer or
counter defined using the TC number. When
used as a word operand, the TC number ac
cesses the present value of the timer or count
er.
Link Relay LR Words: LR 00 to LR 63
Bits: LR 0000 to 6315
Available for use as work bits.
Temporary Relay TR TR 00 to TR 07 (bits only) Used to temporarily store and retrieve execu
tion conditions. These bits can only be used in
the Load and Output instructions. Storing and
retrieving execution conditions is necessary
when programming certain types of branching
ladder diagrams.
Program Memory UM UM: Depends on Memory Unit used. Contains the program executed by the CPU.
When some bits and words in certain data areas are not being used for their in
tended purpose, they can be used in programming as required to control other
bits. Words and bits available for use in this fashion are called work words and
work bits. Most, but not all, unused bits can be used as work bits. Those that can
be used are described area-by-area in the remainder of this section. Actual ap
plication of work bits and work words is described in Section 4 Writing and Input
ting the Program.
Some data areas contain flags and/or control bits. Flags are bits that are auto
matically turned ON and OFF to indicate particular operation status. Although
some flags can be turned ON and OFF by the user, most flags are read only; they
cannot be controlled directly.
Control bits are bits turned ON and OFF by the user to control specific aspects of
operation. Any bit given a name using the word bit rather than the word flag is a
control bit, e.g., Restart bits are control bits.